While I am on vacation, I’m reprinting a number of “Classic Insolence” posts to keep the blog active while I’m gone. (It also has the salutory effect of allowing me to move some of my favorite posts from the old blog over to the new blog, and I’m guessing that quite a few of my readers have probably never seen many of these old posts.) These will appear at least twice a day while I’m gone (and that will probably leave some leftover for Christmas vacation, even). Enjoy, and please feel free to comment. I will be checking in from time to time when I have Internet access to see if the reaction to these old posts here on ScienceBlogs is any different from what it was when they originally appeared, and, blogging addict that I am, I’ll probably even put up fresh material once or twice.

This particular piece first appeared on January 27, 2005, on the 60th anniversary of the liberation of Auschwitz:

I stared at words on the computer screen, dumbfounded:

They do not want to do it because it would show that at Auschwitz Nazis were conducting ETHICAL medicine and they want to keep the myths of the Holocaust alive!

What the–?? I blinked. Did I read this right? I read it again, gently flickering on the computer screen:

They do not want to do it because it would show that at Auschwitz Nazis were conducting ETHICAL medicine and they want to keep the myths of the Holocaust alive!

No doubt about it, I had read it correctly. It was no mistake, no matter how much I wished it had been. The Usenet poster had just capped off an argument I was having with him by saying that historians and doctors did not want to look into his claims because doing so would show that the doctors at Auschwitz-Birkenau were practicing “ethical” medicine.
“Ethical” medicine? At Auschwitz-Birkenau? Could he possibly be referring to the same Auschwitz where well over 1 million people had been killed either by gassing, starvation, disease, or even twisted “medical” experiments? The same Auschwitz, where untold thousands were subjected to starvation, overwork, and disease, with the intent of getting as much work as possible out of them before they died, while expending as little as possible in the way of food and other resources?

“Ethical medicine”? At Auschwitz, the very place where doctors–my profession, to our eternal shame!–did not merely passively acquiesce to the horrors of the camp. No, physicians were integral cogs in the machinery of death. At Auschwitz, doctors, who had taken an oath to preserve life, greeted each new transport of Jews and other prisoners and oversaw the brutal process of selection. They would take a perfunctory look at each new inmate and immediately decide his fate based on how “healthy”–and thus able to work–he appeared. These doctors directed babies, children, the old, the sick, and infirm to one line leading straight to the gas chambers at Birkenau and the young and healthy to another line leading to the camp. Those who were chosen for the concentration camp (Auschwitz) would be subjected to brutal overwork and starvation until they either succumbed or became too debilitated to work and thus candidates for the gas chambers. No doubt some of them came to envy those who went straight to the gas.

“Ethical medicine”? I had to remind myself that this was the very same place where doctors like Josef Mengele and like-minded doctors (Drs. Weber, Schumann, Wirth, and Kremer) performed cruel and scientifically useless experiments on the hapless prisoners, examples of which included (among many others):

Subjecting prisoners to low pressure chambers designed to simulate high altitude until they developed pulmonary edema and died

Immersing prisoners in ice-cold water to simulate the conditions that downed Nazi pilots encountered in the North Sea

Irradiating women’s pelvises in order to sterilize them, leading to horrific complications of radiation enteritis, leading to bowel obstructions and fistulae

Killing and dissecting of prisoners for anatomic experiments to determine the effects of starvation and the “biologic basis” of racial differences

Injecting various chemicals into prisoner’s eyes to change their color (this was one of Dr. Mengele’s special interests, along with his studies of twins), leading to infection and sometimes blindness

Performed “euthanasia” of ill patients by direct injection of phenol into their hearts (because injecting it into peripheral veins took too long to kill the prisoner)

I knew at that point that further argument was pointless. I had just been slapped in the face by Holocaust denial. The only reason this anonymous Usenet denizen could possibly say such things is because he did not believe that the Nazis intentionally did their best to wipe out European Jewry. So eager was he to deny the crimes of the Nazi regime that he was willing to attribute “ethical” medicine to butchers like Dr. Mengele.

Sixty years ago today, the Red Army entered Auschwitz-Birkenau, liberating it from the Nazis and at the same time revealing for the world to see the dark heart of the Holocaust, the camp that has come to symbolize the Nazis’ homicidal hatred and fear of the Jews. Only around 7,000 thousand pathetic souls remained, a mere fraction of the number that used to be imprisoned there, all starving, many diseased, many dying. The Soviets also discovered hundreds of thousands of women’s coats and dresses and men’s suits, and tons of human hair; that, and piles upon piles of rotting corpses. Over the month of January, seeing the rapid advance of the Soviet Army west through Poland, the SS at Auschwitz-Birkenau had come to realize that the war was lost and the Soviets would soon be at their very gates. They had scrambled to hide the evidence of their crimes and escape to Germany. They had burned files and destroyed the gas chambers. Nine days before, they had begun removing as many prisoners as they could, forcing them to march west, to Germany and to other camps. Tens of thousands of prisoners were forced to march on foot in brutal winter weather, without adequate clothing, food, or shelter. Those who were too weak to march or who committed any infraction during the forced march were shot and left at the side of the road. Those not taken on the march were left to die. Seven days earlier, guards shot 4,200 of the remaining camp survivors.

As I thought about what to write today, it occurred to me that, although I have written about my interest in the Holocaust and Holocaust denial right from the blog’s beginning (and again more recently), I had not yet written about how that interest began. Today, the 60th anniversary of the liberation of the epicenter of the Holocaust, Auschwitz-Birkenau, is the perfect day to do so. You may think the example I described above is extreme, and so it is. However, sadly, the beliefs of many Holocaust deniers are not all that far removed from a belief in the “ethical medicine” of Auschwitz. I first learned that nearly eight years ago.

The year was 1997. I had recently rediscovered the joys of the mass of online squabbling that is known as Usenet after an absence of four years, during which time the rigors of residency had kept me from any online activity more involved than perfunctory responses to e-mail. While perusing the political newsgroups, I had come across a rather bizarre post referring to the “Holohoax,” which had been crossposted to several other newsgroups, including alt.revisionism. I didn’t know it at the time, but alt.revisionism is the newsgroup dedicated to the discussion of Holocaust “revisionism” (which, in actuality, is almost always Holocaust denial). I lurked there for several weeks, hardly believing what I was reading. Over that time, I learned some of the techniques deniers used to downplay the Holocaust, deflect blame from its perpetrators, or portray “exaggeration” of the Holocaust as a Jewish plot. I also learned that, without exception (at least, without any exception I’ve yet seen), Holocaust denial derived from anti-Semitism and/or an admiration for the fascist regime of Adolf Hitler.

My move from lurking to more active involvement in debunking Holocaust denial started, oddly enough, with an admittedly arrogant eagerness to flaunt my medical knowledge. I did not know it at the time, but this precipitous leap into a discussion thread full of Holocaust denial was the beginning of my odyssey. A man who posted under the name Joe Pawlikowski, claiming to represent a group called the Polish Historical Society, had been making the claim that all the dead at Auschwitz were due not to intentional killing, to the gas chambers, but rather to starvation and diarrhea. I had recently learned that this was a standard canard of Holocaust deniers. Not wanting to admit that the Nazis had indeed intentionally sent millions to the gas chambers, Holocaust deniers will concede that there were thousands upon thousands dead in the camps, but will then claim the deaths were due to starvation and disease, not to intentional killing or gassing. They would then claim that the starvation was due to disruption of the supply lines by Allied bombing (never mind that the guards and the people in the nearby towns showed no evidence of deprivation when the Soviets arrived and that it was the explicit policy in the camps to underfeed the inmates and get as much work as possible out of them before they died of starvation). The specific bizarre claims that Pawlikowski was making, to my mind, demanded medical debunking, and, in my hubris, I thought that I could provide knowledge that none of the other debunkers of Holocaust denial could.

What were those claims? Besides the standard claims I mentioned above, which were actually better debunked by those more knowledgeable in Holocaust history than I, Pawlikowski claimed (spelling errors left intact to give you the full flavor of his ranting):

If an occasional prisoner developed oncotic edema (because SS administration was selling meat on the black market), while overfed them with patatos, they would immediately pull off the prisoner from the work detail and send him/her to Lazaret where he/she would be FORCED to drink one gallon of milk (4L) over the next two days and on the third day such survivors reported that they were ready for work with no trace of edema.

A brief explanation is in order here. Protein malnutrition (kwashiorkor) results from inadequate protein intake in the presence of relatively good overall calorie intake. These are the people who have the large protruberant bellies due to the edema caused by lack of protein. This is in contrast to the other major form of malnutrition, marasmus, in which there is both protein and total calorie malnutrition. These patients appear cachexic, and do not have prominent edema. In fact, they usually appear to be wasting away. I pointed out first that the vast majority of the starving at Auschwitz and other camps did not suffer from kwashiokor, but rather marasmus (a diagnosis that one can make just by looking at photos of camp survivors). I then pointed out that, even if it were a case of kwashiorkor, it takes a very prolonged period of time to develop malnutrition that severe. It cannot be reversed by two or three days of refeeding. I pointed out that 4 L of milk would not even come close to correcting such a nutritional deficit. In fact, feeding milk to patients with kwashiorkor can be counterproductive, because they often develop lactose intolerance.

None of these arguments affected Pawlikowski in the least. The argument went back and forth over several days. I calmly stated the medical facts that made his claims ridiculous. He then shifted gears, and the discussion moved towards typhus and his claims that typhus (which he seemed to be confusing with typhoid), not gas chambers, had caused most of the deaths. In Pawlikowski’s world, there were no gas chambers at Auschwitz-Birkenau, and the crematoria there existed only for hygienic purposes, to dispose of corpses and prevent the spread of epidemic disease. His responses got longer and longer. And, then, buried in one of his rants:

They do not want to do it because it would show that at Auschwitz Nazis were conducting ETHICAL medicine and they want to keep the myths of the Holocaust alive!

At that point, I hit the wall. I remember going off on him. I remember going on and on about the crimes committed by doctors at Auschwitz. He started harping on my name, asking me insistently if I were Jewish. Eventually I gave up. There was no point. A few weeks later, he reappeared. He even e-mailed me. I made the mistake of replying. He posted my e-mail to Usenet, teaching me an important lesson: Never reply to a Holocaust denier with anything I do not wish to be publicized. I even gave him the opportunity to renounce his previous claim that the Nazis practiced “ethical” medicine. His response:

I confirm that Nazis practiced ethical medicine at Auschwitz. I repeat that stories about Mengele are fantasmagoric.

But enough of Pawlikowski. Even now, thinking about him disgusts me.

Over the next seven years, I made hundreds, perhaps thousands, of posts to alt.revisionism. I learned a great deal about the Holocaust. I learned about how Holocaust deniers misrepresent legitimate debates among historians over the origins and evolution of the Holocaust as “proof” that there was never a plan to exterminate European Jewry. They would claim that there was never a written order from Hitler to exterminate the Jews, neglecting the fact that Hitler was well known to avoid giving written orders, preferring to make his wishes known to his henchmen and let them compete with each other to carry his wishes out and win his favor. I learned the difference between genuine historical revisionism (a legitimate pursuit of historians, who reexamine history in light of new evidence or reinterpretation of old evidence to come to new conclusions about it) and Holocaust denial, which is not, although Holocaust deniers like to call themselves “revisionists” in order to falsely claim the mantle of academic rigor. Although I did not believe it at first, over time I also reluctantly came to the conclusion that every Holocaust denier is an anti-Semite at heart and that the real purpose of Holocaust revisionism is to “make National Socialism an acceptable political alternative again.”

Eventually, my crude efforts drew the attention of a like-minded group of people who were doing the same, most of whom are much more knowledgeable than I. I found out about how much some of them had sacrificed for their efforts. Harry Mazal, for instance, makes great sacrifices in time and money to maintain the Holocaust History Project, even in the face of distributed denial of service attacks, and Ken McVay runs the other premier Holocaust education site, Nizkor. One woman in particular, Sara Salzman, suffered serious harassment over several years as a result of her efforts. Her case was the subject of a Hatewatch report, and has been discussed at international meetings on online hate. In time, I suffered a very mild version of what they suffered, when my name was circulated around Usenet as part a list of others who combat Holocaust denial falsely labeled as pedophiles (a standard smear). Fortunately, nothing has ever come of it (although that list still resurfaces from time to time, even years later, a testament to the longevity of Internet smears.) My paltry efforts and sacrifices pale in comparison to theirs.

As I reflect upon the 60th anniversary of the liberation of Auschwitz-Birkenau and the horrors that occurred there over nearly five years, I now realize that it was this initial experience with Holocaust denial that sparked my overall interest in rationalism and skepticism, leading me to do my small part to combat the pseudohistory that is Holocaust denial. The offensiveness of a group of people seeking to deny or minimize the deaths of 6,000,000 Jews and millions of others in order to make the world conform to their anti-Semitism or to whitewash the ideology that committed those murders was the spark that shocked me from my complacency. Before that encounter, I had little interest in promoting evidence-based thinking outside of my own surgical practice and laboratory. I rarely openly questioned pseudohistorical or pseudoscientific claims, even though privately I may have considered them a load of garbage. I now realize that pseudoscience and pseudohistory can contribute to making such atrocities possible, particularly when they fused to despicable ideological belief systems like Nazi-ism. For example, the “science” of racial hygiene (in actuality a perversion of Darwin’s theory) touted by Nazi scientists and doctors, served to justify their exaggeration and misrepresentation of racial differences and the classification of races as “superior” or “inferior.” Coupled to racial hygiene and pseudohistory (the myth of the “stab-in-the-back” by Communists and Jews leading to Germany’s defeat in World War I, of a “time of greatness” 50 years earlier during Bismarck’s reign, and of a pan-Aryan culture that needed to be reunited and protected from the Jews), the romantic evocation of Volk and the belief that a lost time of greatness could be reclaimed if certain enemies were defeated, provided a potent ideological brew that the Nazis used to justify their genocidal policies: the exclusion of Jews from political life (the Nuremberg Laws); the relentless expansionism of the Reich in search of Lebensraum in the East; the gassing of the mentally ill and retarded (“life unworthy of life” or “worthless eaters,” as Nazi propaganda characterized them); the forcible expulsion of Jews (often compared by Nazi propaganda to “bacilli” or “cancers” that must be cut out) from territory controlled by the Reich; and their later conclusion that expulsion wasn’t enough, that they must be exterminated; and, finally, the construction of camps in which to do it, like Auschwitz.

So, today, as memorials to the murdered are held and speeches made, I urge everyone to take a moment and reflect upon the evil that humans are capable of. But, more importantly, reflect upon what each of us might do to prevent it from happening again, particularly since the march of time will soon lead to the disappearance of those who were there, still remember, and can remind us of what happened. One way that I choose to honor the memory of the dead is by doing what little I can to refute those who would, for their own racist or ideological reasons, deny the crimes of those who killed them. To that end, from time to time, I will post articles here refuting specific distortions and lies of Holocaust deniers and doing my small part to help out the Holocaust History Project. In the grand scheme of things, it is not that much. But it is what I can do.

I always discover that my interlocutor idolizes Hitler, not in spite of the high-altitude bombs and the rumbling invasions, the machine guns, the accuasations and lies, but because of those acts and instruments. He is delighted by evil and atrocity. The triumph of Germany does not matter to him; he wants the humiliation of England and a satisfying burning of London. He admires Hitler as he once admired his precursors in the criminal underworld of Chicago. the discussion becomes impossible because the ofenses I ascribe to Hitler are, for him, wonders and virtues. The apologists of Amigas, Ramirez, Quiroga, Rosas or Urquiza pardon or gloss over their crimes; the defender of Hitler derives a special pleasure from them. The Hitlerist is always a spiteful man, and a secret and sometimes public worshiper of criminal “vivacity” and cruelty.

My grandfather has a firsthand knowledge of this; he was with the Third Army when another, less notorious camp was liberated. (Don’t recall which one offhand. Auschwitz was probably the worst, but it was certainly not the only.)

I visited one camp when I visited Berlin. It’s a particularly obscure one to most tourists, at Oreinenburg (sp?). But it has special distinction: it was one of the first, if not actually the first. It was actually established *before* the government mandated the camps, and before the Nazis had established a sufficient power base to begin their campaign against the Jews openly. It shocked me to discover just how long the “final solution” had been in progress. Much longer than the history books tend to say, as the books tend to date it to the time the Nazi regime made it official policy. But in fact they got started killing Jews before they even gained power. They were just more circumspect about it, claiming that the camp was for rehabilitation of prisoners. But the prisoners were systematically malnourished and abused right from teh beginning.

Another reason that camp isn’t as well known is because it wasn’t an exclusively Jewish camp. It was more general. Jews, homosexuals, political dissidents, Communists, prisoners of war, Christians who refused to follow the new German Church, the mentally ill, etc. After the war, the Soviets used it to house captured German soldiers, and their abuses were actually almost as bad; the Russian antipathy for Germans goes back a very long ways. The whole thing was very eye-opening for me, and I’ve never denied the Holocaust.

Those who deny the Holocaust can only be willfully doing so. I cannot conceive of a person rationally coming to the conclusion that it didn’t happen. One has to chose to disbelieve the available evidence. This makes debate with Holocaust deniers essentially pointless.

Blake Stacey’s quote from Jorge Luis Borges is new to me and very powerful…it tallies well with material I’ve read on today’s neo-Nazis, who are fascinated with and obsessed by the Nazi trail of brutality. For today’s neo-Nazis, it is the world they seek to create and live in, where these neo-Nazis can strut around their towns like the SS Hauptscharfuhrers 60 years ago, glittering in black uniforms, dispensing bonhomie and brutality at will and ad lib, humiliating their former tormentors and settling old scores, the previously unattainable hot blonde draped around their neck.

That is one of the reasons Holocaust Deniers talk about the Holocaust all the time. Even in denying it, they are obsessed with it…if it had not happened, Nazism would lose its attraction to them. Because their lives are so wretched, they identify with a state so powerful it could murder millions, to give themselves a sense of self-importance they neither merit nor deserve.

For Loony Basoony: Right first time. The camp was “Oranienburg,” and it was established shortly after the Reichstag Fire as part of the “Gleichshaltung” to round up all the opponents of the new Nazi regime and put them out of business permanently.

Richard Harwood in his (28 page) book ‘Did Six Million Really Die? certainly uses similar arguments. He says that the ICRC reports fail to mention any gas chambers.I*’m confused because the ICRC reports specifically state that under Nazi rule Jews were subject to ‘systematic extermination’ (p.641). Isn’t that enough?

And Richard Harwood, who’s he?…hmmm…that’s Richard Verrall’s pseudonym. Verrall was the editor of ‘Spearhead’ – the official mouthpiece of the National Front.

Welcome to Austria: Birthplace of Adolph Hitler. Seems more than a little illogical and hypocritical for Austria to imprison Holocaust deniers when they started the Holocaust in the first place. So check out how many Nazi leaders came from Austria. Small wonder they are in denial. Finally Austria realised the embarrassment they were causing for themselves and released Historian David Irving early. But this is symptomatic of how world opinion is shifting away from the Jews in general and Israel in particular. They are still milking the Holocaust for every ounce of sympathy; enough already. The extent to which US Jews control the US government is finally being exposed. The even bigger picture is that a decline in US world status (definitely on the cards) will be very bad news for Israel. Similarly, Taiwan, South Korea and even Guam might want to mend a few fences with China. Notice how Japan is moving from a self-defence force to a standing army. Imagine for a moment the price of oil per barrel if the state of Israel had never been founded.

I bet you are blond with blue eyes. BTW, your idea of eliminating Israel to reduce the price of oil in the world is ingenious. Almost as good as Hitler’s idea to eliminate them just because they were Jews. Yap, the same BS all over again; the Jews control the US congress, the media, the banks. And of course, Israel persuaded Bush to go into Iraq. Could you imagine what would be the price of oil if Israel would not do it? Just wait until Israel will succeed in persuading Bush to attack Iran – you and your fat ass will not be able anymore to drive your SUV, the only vehicle in which you can fit yourself in.

Have you noticed that, with one notable exception, you can get away with spouting the most outrageous views on just about any subject under the Sun? However, write anything mildly anti-Semitic or anti-Zionist, or worse suggest that the Holocaust was just the tiniest bit exaggerated, and everyone spits the dummy and demands you are banned. So what happened to free speech, guys? All you do is give credence to the theory the world is controlled by a vast right wing, Jewish-controlled conspiracy. So when any opinion mildly hostile to Jews and Israel is castigated and sensored, you find yourself thinking, “Maybe that’s not so far-fetched after all.” Read the reports on the USS Liberty attack in June 1967, and then see if you are such big fans of Israel.

Give me a break. You’re confusing two different things. There’s plenty of criticism of Israel out there that is not only tolerated, but encouraged in some quarters. Holocaust denial is based on anti-Semitism, on the other hand. Period. No matter how much Holocaust deniers claim they are not anti-Semitic, they always reveal their anti-Semitism in the end.

Oh, and lest you think I support laws criminalizing Holocaust denial, read my latest thoughts on the matter.

My word, what a vivid imagination you gentlemen have. So I’m an obese, US citizen (presumably), closet Nazi, blond, blue-eyed, SUV driver. These feelings you are experiencing: Low self-esteem, hostility, lack of confidence, paranoia. Tell me about them. When did they begin? Hold the phone a second while I crank up the gramophone and play “Horst Wessel Lied” one more time. You guys bring out the worst in me, and I suspect in many other people. How do I know how many people were murdered in the Holocaust? Could be two million; could be 20 million. Almost certainly somewhere in between. That’s why an independent investigation is long overdue. Funny old world isn’t? Usually it’s the victim that demands the investigation. But in this case it’s the victim that’s resisting any investigation tooth and nail. Now why do you suppose that is?

As usual, a Holocaust denier busily makes the victims into villains, and twists the facts to support his bottom-line: hatred of Jews.

The Holocaust is one of the most heavily investigated events in human history, with museums and universities studying it across the globe. Every year comes new scholarship on it, which reveals among other things, the increasing depths of horror and depravity to which it sank. Every scholar who seeks a Master’s or a Ph.D. must produce original work, as you probably don’t know…or don’t care.

That’s why the numbers of those murdered at Auschwitz have changed over the years, and the by-product and side issue of “human soap” has been so tightly addressed. At the same time, we have learned more about the Wehrmacht’s involvement in the Holocaust, the work of Einsatzgruppen in the East, and the role of German corporations in exploiting slave labor.

There have also been massive efforts to record and archive the testimony of survivors, before they all pass away, so as to make the millions of accounts of the Holocaust — and it is millions of accounts — permanent, with their personal emotion retained.

An “independent investigation” in your eyes, would obviously be little more than a group of like-minded neo-Nazis rubber stamping the “Leuchter Report” and its incompetencies and outright lies. Who will head this “independent investigation?” David Irving? Ernst Zundel? Mark Weber? Or someone else with a penknife to grind against Jews of all ages and both sexes? Stanford-trained chemists like Richard Green aren’t good enough, are they? Or Oxford-trained historians like Richard Evans and Sir Martin Gilbert?

And as for politics in the Mid-East today…that’s irrelevant to what happened in Europe from 1933 to 1945. Besides, if Jews really controlled the US government, I don’t think Israel would be facing suicide bombs every day and possible atomic annihilation in 2009…by now I would expect that the Israelis would control the entire Mid-east, and be dictating the price of oil to the world. If the Israelis and Jews control the US government, they’re not doing a good job of it, are they?

And I doubt you’re blonde-haired, blue-eyed, or driving an SUV. Obese, maybe. But my experience of defenders of Hitler and other anti-Semites is that they are about as far from the physical Aryan ideal as Hitler’s propaganda proclaimed the Jews were.

And you’re obviously not American, because you refer to “spit the dummy” and you’re going to “crank up the gramophone.” And if you were, you might know that the island of Guam can’t re-think its alliances with any nation. If you don’t know why, do some research on the island and its history. Your knowledge of the place is as faulty as the rest of your material.

Anyway, it doesn’t matter who and what you are, because it’s always the same rubbish from neo-Nazis. They never come up with anything new, even when their material is revealed to be the garbage that it is…they just grind over the same penknife over and over again. How much they hate the Jews. How the Jews manipulate everything from behind the scenes. How they think Hitler got a raw deal from history. How everyone is really on their side but afraid to speak up. How the Jews will soon meet their deserved fate. How five guys in brown shirts yelling “Sieg Heil” in front of a store and behind 800 riot cops is a great victory for the White Nationalist/Neo-Nazi movement. How Jews are descended from the Serpent. Always the same stupid garbage. Never an original idea or a real program in any of it. Always shifting the blame for the mess to those mysterious Jews.

And one other thing: hiding behind anonymity. For a man who claims to be part of the cutting edge of humanity, who is leading us to a millennium that will be a “Judenfrei” paradise, you’re not exactly standing tall and pledging your life, your bond, or your sacred honor, are you?

But fellas like you lack any sacred honor. If you did, you wouldn’t be what you are.

SF writer James P. Hogan seems to be at least on the borderline of Holocaust denial. Nothing explicit that I’ve ever found, but he seems sympathetic to David Irving, and defends him in language I find highly suspicious. I have no evidence that Hogan’s views are driven by an underlying antisemitism (though ICBW); instead I suspect it’s a manifestation of his general loony-contrarian attitude towards the Received Wisdom on any subject (he’s also a Velikovskian, and works it into his fiction in places).